Samsung Electronics Co., Ltd.

Empire Technology Development LLC

Mun-Kyu Lee

Eunah Kim

Jung Hee Cheon

Tae-Chul Jung

Jeong Hyun Yi

Taekyoung Kwon

Jung-Hee Cheon

Tae-Kyoung Kwon

Jeong-hyun Yi

Hong-tae Kim

Examples are disclosed for transforming a multi-dimensional attribute value for a taste related to an area of interest for a user of a computing device and encrypting or decrypting a ciphertext using the transformed multi-dimensional attribute value in order to securely share data with another computing device.

Taste-based authentication to securely share data

A key calculation method and a shared key generation method, the key calculation method including: generating two keys to perform a key calculation; calculating a first value based on coefficients having an identical coefficient value among coefficients included in each of the two keys; and performing a coordinates operation or an exponentiation operation based on the first value, wherein the calculating of the first value is performed with respect to each of coefficient values included in the two keys, excluding 0.

Key calculation method and key agreement method using the same

A method for generating, operating, and using a sparse w-NAF key for encryption is disclosed. The method for generating a key comprises generating a string of a number of coefficients, in which at most one coefficient, excluding 0, among a consecutive w number of coefficients, corresponds to a positive odd integer equal to or less than 2(w being a natural number equal to or more than 2); and outputting the generated string as a key. Accordingly, an encryption is executed through an exponential operation or scalar multiplication using a sparse w-NAF key having the scarce coefficients, excluding 0, such that an encryption pace is improved.

Method for generating, operating, and using a sparse w-NAF key for encryption

Growing community of inventors

Gyeonggi-do, South Korea

Mun-Kyu Lee